UPDATE 1-Tennis-Washington Classic men's semi-final results

Aug 16 - Washington Classic men's singles
semi-final results on Saturday (prefix number denotes seeding,
* new result)
* Viktor Troicki (Serbia) beat Igor Kunitsyn (Russia) 6-4 6-2
2-Juan Martin Del Potro (Argentina) beat 4-Tommy Haas
(Germany) 6-2 6-1
(Compiled by Infostrada Sports; Editing by John O'Brien)